/* ============================================================
   衡阳市蒸湘区大白软件开发工作室 - 企业官网
   共享样式 style.css
   风格：白 + 亮蓝 / 圆润 / 流动曲线 / 现代轻盈
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --primary: #3B8BFF;            /* logo 亮蓝 */
  --primary-dark: #1F6BE5;
  --primary-deep: #0F3FB3;        /* 深色锚点 */
  --primary-light: #EAF2FF;
  --primary-soft: #F4F8FF;
  --accent: #06B6D4;              /* 青蓝点缀 */
  --text: #0F1B2D;
  --muted: #6B7B95;
  --bg: #F5F9FF;
  --white: #ffffff;
  --line: #E5ECF5;
  --radius-sm: 12px;
  --radius: 20px;
  --radius-lg: 28px;
  --shadow-sm: 0 4px 14px rgba(15, 30, 60, .06);
  --shadow-md: 0 14px 36px rgba(15, 30, 60, .08);
  --shadow-lg: 0 30px 70px rgba(15, 30, 60, .12);
  --shadow-blue: 0 14px 36px rgba(59, 139, 255, .22);
  --font: "PingFang SC", "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

html, body { overflow-x: hidden; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .28s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 18px 42px rgba(31, 107, 229, .32); }
.btn-outline {
  background: rgba(255,255,255,.6);
  color: var(--primary);
  border: 1.5px solid rgba(59, 139, 255, .35);
  backdrop-filter: blur(6px);
}
.btn-outline:hover { border-color: var(--primary); background: #fff; }
.btn-light {
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.btn-light:hover { background: var(--primary-light); transform: translateY(-2px); }

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(229, 236, 245, .6);
  transition: box-shadow .3s;
}
.navbar.scrolled { box-shadow: var(--shadow-sm); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
}
.logo-img {
  width: 42px; height: 42px;
  object-fit: contain;
  filter: drop-shadow(0 6px 14px rgba(59, 139, 255, .25));
}
.logo small { display: block; font-size: 11px; font-weight: 400; color: var(--muted); line-height: 1.2; letter-spacing: 1px; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-menu a {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}
.nav-menu a:hover { color: var(--primary); background: var(--primary-light); }
.nav-menu a.active { color: var(--primary); font-weight: 600; background: var(--primary-light); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: 16px;
}
.nav-tel {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
}
.nav-tel svg { width: 18px; height: 18px; }
.nav-tel:hover { color: var(--primary-dark); }

/* 汉堡菜单 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 24px; height: 2.5px;
  background: var(--text);
  border-radius: 3px;
  transition: all .3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- Hero（首页主视觉） ---------- */
.hero {
  position: relative;
  padding: 168px 0 110px;
  background:
    radial-gradient(900px 480px at 88% 18%, rgba(59, 139, 255, .14), transparent 60%),
    radial-gradient(700px 400px at 5% 90%, rgba(6, 182, 212, .10), transparent 60%),
    linear-gradient(180deg, #F4F8FF 0%, #FFFFFF 72%);
  color: var(--text);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(59, 139, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 139, 255, .05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 75% 65% at 55% 30%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 55% 30%, #000 30%, transparent 78%);
  pointer-events: none;
}

/* hero 流动曲线装饰 */
.hero-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}
.hero-decoration svg { position: absolute; }
.hero-decoration .curve-1 { top: 0; right: -60px; width: 560px; height: 420px; opacity: .75; }
.hero-decoration .curve-2 { bottom: 0; left: -40px; width: 460px; height: 360px; opacity: .55; }

.hero-inner {
  position: relative;
  z-index: 2;
  display: block;
  text-align: center;
}
.hero-copy { max-width: 780px; margin: 0 auto; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .7);
  border: 1px solid rgba(59, 139, 255, .18);
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--primary-dark);
  margin-bottom: 26px;
  backdrop-filter: blur(6px);
}
.hero-badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 10px var(--primary); }

.hero h1 {
  font-size: clamp(32px, 4.6vw, 54px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: .5px;
  margin-bottom: 22px;
  color: var(--text);
}
.hero h1 em { font-style: normal;
  background: linear-gradient(120deg, var(--primary), var(--accent));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p.lead {
  font-size: 17px;
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto 38px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }

.hero-meta {
  display: flex;
  gap: 36px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid rgba(59, 139, 255, .14);
  justify-content: center;
}
.hero-meta .item b { display: block; font-size: 24px; font-weight: 800; color: var(--primary-dark); }
.hero-meta .item span { font-size: 13px; color: var(--muted); }

/* ---------- 通用区块 ---------- */
.section { padding: 100px 0; position: relative; }
.section.bg { background: var(--primary-soft); }

.section-head {
  max-width: 720px;
  margin: 0 auto 60px;
  text-align: center;
}
.section-head .tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 18px;
}
.section-head h2 {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text);
  line-height: 1.35;
}
.section-head p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 16px;
}

/* ---------- 业务卡片 ---------- */
.grid { display: grid; gap: 26px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity .3s;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(59, 139, 255, .25);
}
.card:hover::before { opacity: 1; }

.card .icon {
  width: 60px; height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, #EFF5FF, #DCEBFE);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
  transition: all .3s;
}
.card:hover .icon { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; transform: rotate(-6deg) scale(1.05); }
.card .icon svg { width: 27px; height: 27px; }

.card h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; }
.card p { color: var(--muted); font-size: 14.5px; }
.card .more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.card .more svg { width: 15px; height: 15px; transition: transform .25s; }
.card:hover .more svg { transform: translateX(4px); }

/* ---------- 为什么选择我们 ---------- */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px 40px; }
.feature-item {
  display: flex;
  gap: 18px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all .3s;
}
.feature-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: rgba(59, 139, 255, .2); }
.feature-item .num {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-blue);
}
.feature-item h4 { font-size: 17px; margin-bottom: 6px; }
.feature-item p { color: var(--muted); font-size: 14px; }

/* ---------- 数据统计 ---------- */
.stats {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  color: #fff;
  padding: 76px 0;
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: "";
  position: absolute;
  width: 420px; height: 420px;
  right: -120px; top: -160px;
  background: radial-gradient(circle, rgba(255,255,255,.18), transparent 65%);
  border-radius: 50%;
}
.stats::after {
  content: "";
  position: absolute;
  width: 300px; height: 300px;
  left: -80px; bottom: -120px;
  background: radial-gradient(circle, rgba(6, 182, 212, .25), transparent 65%);
  border-radius: 50%;
}
.stats-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; position: relative; z-index: 1; }
.stats-inner b { display: block; font-size: clamp(34px, 4vw, 46px); font-weight: 800; }
.stats-inner b span { color: #BFE0FF; }
.stats-inner .label { margin-top: 6px; font-size: 14px; color: rgba(255,255,255,.78); }

/* ---------- 行业方案 ---------- */
.industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.industry-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  transition: all .3s;
}
.industry-item:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); border-color: rgba(59, 139, 255, .25); }
.industry-item .ico {
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #EFF5FF, #DCEBFE);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
}
.industry-item .ico svg { width: 28px; height: 28px; }
.industry-item h4 { font-size: 16.5px; margin-bottom: 8px; }
.industry-item p { font-size: 13.5px; color: var(--muted); }

/* ---------- 合作客户墙 ---------- */
.client-wall { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; max-width: 1000px; margin: 0 auto; }
.client-card {
  padding: 22px 32px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  transition: all .3s;
  min-width: 200px;
  text-align: center;
}
.client-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: rgba(59, 139, 255, .25); color: var(--primary-dark); }

/* ---------- CTA ---------- */
.cta {
  position: relative;
  border-radius: 28px;
  background: linear-gradient(135deg, #EFF5FF 0%, #DCEBFE 100%);
  color: var(--text);
  padding: 60px 56px;
  overflow: hidden;
  border: 1px solid rgba(59, 139, 255, .15);
}
.cta::before {
  content: "";
  position: absolute;
  width: 340px; height: 340px;
  right: -80px; top: -120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 139, 255, .18), transparent 65%);
}
.cta::after {
  content: "";
  position: absolute;
  width: 280px; height: 280px;
  left: -60px; bottom: -100px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6, 182, 212, .14), transparent 65%);
}
.cta .row { display: flex; align-items: center; justify-content: space-between; gap: 40px; position: relative; z-index: 1; flex-wrap: wrap; }
.cta h2 { font-size: clamp(24px, 2.8vw, 32px); font-weight: 800; margin-bottom: 10px; color: var(--text); }
.cta p { color: var(--muted); font-size: 15px; }
.cta .actions { display: flex; gap: 14px; }
.cta .btn-outline { background: rgba(255,255,255,.7); color: var(--primary); border-color: rgba(59, 139, 255, .35); }
.cta .btn-outline:hover { background: #fff; border-color: var(--primary); }

/* ---------- 页脚 ---------- */
.footer { background: #0B1F3F; color: #93a3bd; font-size: 14px; }
.footer-top { padding: 68px 0 40px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; }
.footer .logo { color: #fff; margin-bottom: 18px; }
.footer .logo-img { filter: drop-shadow(0 6px 14px rgba(59, 139, 255, .45)); }
.footer p.desc { font-size: 14px; line-height: 1.9; color: #8c9bb5; max-width: 320px; }
.footer h5 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.footer ul li { margin-bottom: 12px; }
.footer ul a:hover { color: #6ea2ff; }
.footer .contact-list li { display: flex; gap: 10px; align-items: flex-start; }
.footer .contact-list svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 3px; color: #6ea2ff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #6c7d99;
}
.footer-bottom a:hover { color: #93b8ff; }

/* ---------- 页面头部（内页） ---------- */
.page-head {
  padding: 152px 0 80px;
  background:
    radial-gradient(900px 420px at 90% -20%, rgba(59, 139, 255, .20), transparent 55%),
    radial-gradient(600px 340px at 5% 90%, rgba(6, 182, 212, .10), transparent 60%),
    linear-gradient(180deg, #F4F8FF 0%, #FFFFFF 100%);
  color: var(--text);
  position: relative;
  overflow: hidden;
}
.page-head::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(59, 139, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 139, 255, .06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 78%);
}
.page-head .container { position: relative; z-index: 1; }
.page-head .crumb { font-size: 13px; color: var(--muted); margin-bottom: 18px; letter-spacing: 1px; }
.page-head .crumb a { color: var(--primary); }
.page-head .crumb a:hover { color: var(--primary-dark); }
.page-head h1 { font-size: clamp(30px, 3.6vw, 44px); font-weight: 800; letter-spacing: 1px; margin-bottom: 14px; color: var(--text); }
.page-head p { font-size: 16px; color: var(--muted); max-width: 640px; }

/* ---------- 关于我们 ---------- */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-text h2 { font-size: 30px; font-weight: 800; margin-bottom: 22px; line-height: 1.4; }
.about-text p { color: var(--muted); margin-bottom: 16px; font-size: 15.5px; }
.about-text .highlight { color: var(--primary); font-weight: 600; }

.about-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(160deg, #FFFFFF 0%, #EAF2FF 100%);
  border: 1px solid rgba(59, 139, 255, .15);
  color: var(--text);
  padding: 40px 36px;
  position: relative;
  box-shadow: var(--shadow-md);
}
.about-visual::before {
  content: "";
  position: absolute;
  width: 260px; height: 260px;
  right: -80px; top: -80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 139, 255, .16), transparent 65%);
}
.about-visual h3 { font-size: 22px; font-weight: 800; margin-bottom: 18px; position: relative; z-index: 1; }
.about-visual ul { position: relative; z-index: 1; }
.about-visual ul li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(59, 139, 255, .10);
  font-size: 15px;
}
.about-visual ul li:last-child { border-bottom: none; }
.about-visual ul li svg { width: 20px; height: 20px; color: var(--primary); flex-shrink: 0; margin-top: 3px; }

/* 使命愿景 */
.mvv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.mvv-card {
  text-align: center;
  padding: 44px 32px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line);
  transition: all .3s;
}
.mvv-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); border-color: rgba(59, 139, 255, .25); }
.mvv-card .ico {
  width: 72px; height: 72px;
  margin: 0 auto 22px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-blue);
}
.mvv-card .ico svg { width: 30px; height: 30px; }
.mvv-card h3 { font-size: 20px; margin-bottom: 12px; }
.mvv-card p { color: var(--muted); font-size: 14.5px; }

/* 服务流程 */
.process { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; position: relative; }
.process .step { text-align: center; position: relative; }
.process .step .dot {
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--primary);
  color: var(--primary);
  font-weight: 800;
  font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  position: relative;
  z-index: 2;
  transition: all .3s;
}
.process .step:hover .dot { background: var(--primary); color: #fff; box-shadow: var(--shadow-blue); }
.process .step h4 { font-size: 16px; margin-bottom: 8px; }
.process .step p { font-size: 13px; color: var(--muted); }
.process::before {
  content: "";
  position: absolute;
  top: 32px; left: 10%; right: 10%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--primary) 0 8px, transparent 8px 16px);
  opacity: .35;
  z-index: 1;
}

/* 时间线 */
.timeline { max-width: 820px; margin: 0 auto; position: relative; padding-left: 36px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 10px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), #bcd2ff);
}
.timeline li { position: relative; padding: 0 0 40px 30px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -33px; top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light);
}
.timeline li .year {
  display: inline-block;
  padding: 3px 14px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 13.5px;
  margin-bottom: 10px;
}
.timeline li h4 { font-size: 18px; margin-bottom: 6px; }
.timeline li p { color: var(--muted); font-size: 14.5px; }

/* ---------- 产品服务 ---------- */
.service-block {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 54px;
  align-items: center;
  padding: 30px 0;
}
.service-block.reverse { direction: rtl; }
.service-block.reverse > * { direction: ltr; }

.service-card { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); background: var(--white); }
.service-card .head {
  padding: 36px 32px;
  color: #fff;
  background: linear-gradient(150deg, var(--primary-dark) 0%, var(--primary) 100%);
  position: relative;
  overflow: hidden;
}
.service-card .head::after {
  content: "";
  position: absolute;
  width: 220px; height: 220px;
  right: -70px; top: -70px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.20), transparent 65%);
}
.service-card .head .tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.20);
  border: 1px solid rgba(255,255,255,.30);
  font-size: 12.5px;
  letter-spacing: 1px;
  margin-bottom: 14px;
  position: relative; z-index: 1;
}
.service-card .head h3 { font-size: 24px; font-weight: 800; position: relative; z-index: 1; }
.service-card .head p { font-size: 14px; color: rgba(255,255,255,.82); margin-top: 8px; position: relative; z-index: 1; }
.service-card .body { background: var(--white); border: 1px solid var(--line); border-top: none; padding: 30px 34px; }
.service-card .body h4 { font-size: 15px; font-weight: 700; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; color: var(--text); }
.service-card .body h4::before { content: ""; width: 4px; height: 16px; border-radius: 2px; background: var(--primary); }
.service-card .body ul li {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text);
}
.service-card .body ul li::before { content: ""; flex-shrink: 0; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); margin-top: 9px; }
.service-card .body .scene {
  margin-top: 18px;
  padding: 16px 18px;
  background: var(--primary-soft);
  border-radius: 12px;
  font-size: 13.5px;
  color: var(--muted);
}
.service-card .body .scene b { color: var(--primary); font-weight: 600; }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; align-items: start; }

.info-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 34px;
  box-shadow: var(--shadow-sm);
}
.info-card h3 { font-size: 21px; font-weight: 800; margin-bottom: 26px; }
.info-item { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px dashed var(--line); }
.info-item:last-child { border-bottom: none; }
.info-item .ico {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, #EFF5FF, #DCEBFE);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
}
.info-item .ico svg { width: 21px; height: 21px; }
.info-item b { display: block; font-size: 14px; color: var(--muted); font-weight: 500; margin-bottom: 4px; }
.info-item .val { font-size: 16px; font-weight: 600; color: var(--text); }
.info-item .val a:hover { color: var(--primary); }
.info-item .val.tel { font-size: 22px; font-weight: 800; color: var(--primary-dark); }

.form-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 38px;
  box-shadow: var(--shadow-sm);
}
.form-card h3 { font-size: 21px; font-weight: 800; margin-bottom: 8px; }
.form-card .sub { color: var(--muted); font-size: 14px; margin-bottom: 28px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.form-group label em { color: #e5484d; font-style: normal; }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  transition: all .25s;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(59, 139, 255, .14);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-tip { font-size: 12.5px; color: var(--muted); margin-top: 6px; }

.form-success {
  display: none;
  padding: 14px 18px;
  border-radius: 12px;
  background: #e9f9ef;
  border: 1px solid #b7e8cb;
  color: #157347;
  font-size: 14px;
  margin-bottom: 18px;
}
.form-success.show { display: block; }
.form-error {
  display: none;
  padding: 14px 18px;
  border-radius: 12px;
  background: #fdecec;
  border: 1px solid #f5c2c2;
  color: #b02a37;
  font-size: 14px;
  margin-bottom: 18px;
}
.form-error.show { display: block; }

/* 地图占位 */
.map-placeholder {
  margin-top: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, #EFF5FF 0%, #DCEBFE 100%);
  color: var(--text);
  position: relative;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.map-placeholder .inner { position: relative; z-index: 1; padding: 40px 24px; }
.map-placeholder .pin {
  width: 56px; height: 56px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-blue);
}
.map-placeholder .pin svg { width: 26px; height: 26px; }
.map-placeholder p { font-size: 15px; font-weight: 600; }
.map-placeholder small { display: block; margin-top: 6px; color: var(--muted); font-size: 13px; }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .grid.cols-4, .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); row-gap: 34px; }
  .process::before { display: none; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .about-intro, .service-block { grid-template-columns: 1fr; gap: 40px; }
  .service-block.reverse { direction: ltr; }
  .mvv-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  /* 导航安全区（适配刘海屏） */
  .navbar { padding-top: env(safe-area-inset-top); }
  .nav-inner { height: 64px; }
  .nav-menu {
    position: fixed;
    top: calc(64px + env(safe-area-inset-top)); left: 0; right: 0;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px 28px;
    gap: 6px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    transform: translateY(-16px);
    opacity: 0;
    pointer-events: none;
    transition: all .3s;
  }
  .nav-menu.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-menu a { padding: 14px 18px; font-size: 16px; }
  .nav-toggle { display: flex; }
  .nav-cta .nav-tel { display: none; }
  .logo-img { width: 36px; height: 36px; }
  .logo { font-size: 17px; }

  .section { padding: 72px 0; }
  .hero { padding: 138px 0 76px; }
  .hero-meta { flex-wrap: wrap; gap: 20px; }
  .grid.cols-3, .grid.cols-2, .grid.cols-4, .industry-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr 1fr; }
  .stats-inner { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .cta { padding: 44px 30px; }
  .form-row { grid-template-columns: 1fr; }
  .cta .row { flex-direction: column; align-items: flex-start; }
  .page-head { padding: 126px 0 60px; }

  /* 表单输入 16px+，防止 iOS 聚焦时自动放大页面 */
  .form-group input,
  .form-group textarea,
  .form-group select { font-size: 16px; }

  /* hero 流动曲线在手机上缩小，避免干扰 */
  .hero-decoration .curve-1 { width: 340px; height: 260px; right: -90px; }
  .hero-decoration .curve-2 { width: 300px; height: 240px; left: -90px; }

  /* 页脚底部安全区 */
  .footer-bottom { padding-bottom: calc(22px + env(safe-area-inset-bottom)); }
}

/* ---------- 小屏手机（≤480px） ---------- */
@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .section { padding: 60px 0; }
  .section-head { margin-bottom: 40px; }
  .section-head h2 { font-size: 26px; }
  .section-head p { font-size: 15px; }

  .hero { padding: 132px 0 64px; }
  .hero h1 { font-size: 30px; }
  .hero p.lead { font-size: 15.5px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-meta { gap: 20px; padding-top: 22px; margin-top: 44px; }
  .hero-meta .item b { font-size: 20px; }

  .card { padding: 28px 24px; }
  .grid { gap: 18px; }
  .feature-item { padding: 22px; }
  .industry-item { padding: 26px 20px; }

  .stats { padding: 56px 0; }
  .stats-inner { gap: 22px; }

  .cta { padding: 38px 24px; border-radius: 22px; }
  .cta .actions { width: 100%; flex-direction: column; }
  .cta .actions .btn { width: 100%; }

  .page-head { padding: 118px 0 48px; }
  .page-head h1 { font-size: 30px; }
  .page-head p { font-size: 15px; }

  .about-text h2 { font-size: 25px; }
  .process { grid-template-columns: 1fr; gap: 24px; }
  .process .step { display: flex; flex-direction: column; align-items: center; }
  .service-block { padding: 14px 0; }
  .service-card .head { padding: 26px 22px; }
  .service-card .head h3 { font-size: 21px; }
  .service-card .body { padding: 22px; }

  .info-card, .form-card { padding: 28px 22px; }
  .map-placeholder { min-height: 180px; border-radius: 20px; }

  .footer-top { padding: 52px 0 32px; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 8px; }
}